CN1111752A - Astigmatic and transmissible multiplex colour turbidimeter - Google Patents
Astigmatic and transmissible multiplex colour turbidimeter Download PDFInfo
- Publication number
- CN1111752A CN1111752A CN 94102702 CN94102702A CN1111752A CN 1111752 A CN1111752 A CN 1111752A CN 94102702 CN94102702 CN 94102702 CN 94102702 A CN94102702 A CN 94102702A CN 1111752 A CN1111752 A CN 1111752A
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- liquid
- turbidity
- light
- turbidimeter
- measured
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Abstract
The working principle of the invented instrument utilizes that the scattered light of the suspended grains in the liquid are not affected by the liquid colour, let the photoelectric cell receive the scattered light and transmitted-light of the measured liquid, and conduct the comparative measurements to obtain separately the chromaticity value and the turbidity value, said two values can be measured accurately even under the condition of very large external interference.
Description
A kind ofly use scattering simultaneously.Two kinds of light of transmission compare measures the liquid look.The instrument for environmental protection of turbidity.
According to a little less than the light intensity of transmission suspension with the colourity of this liquid.Lambert-law of Beer that turbidity is relevant.Utilize photoelectric cell that the light that sees through suspension is carried out opto-electronic conversion.Measure the photocurrent intensity that obtains after the conversion, obtain the look of fluid to be measured.Turbidity is to the damping capacity of light.Thereby draw the look of liquid itself.Turbidity.But when measuring with said method, since the electric signal that the turbidity particle produces in the liquid a little less than, extraneous temperature variation, the noise signal that voltage fluctuation produces is interfered faint turbidity signal, and the electrical noise signal of variation makes the turbidity value zero point drift of measuring, poor repeatability, sensitivity is low, and error amount is big, it should be noted that especially the value of measuring comprises turbidity simultaneously.Therefore colourity can't draw independent turbidity of fluid to be measured and chromatic value accurately to the damping capacity of light.This problem is still unresolved so far both at home and abroad.
The present invention looses, and saturating multi-pass look turbidimeter is to utilize mixed light path comparative method for measuring.On single transmitted light Fundamentals of Measurement, increase and to receive by the photoelectric cell of measured liquid-scattering light.Disappear because the scattering luminous energy that liquid colourity produces is low mutually, thus this photoelectric cell actual reception by the light signal of suspended particle in liquid institute scattering, this light signal is not influenced by fluid to be measured colourity.Scattered light battery and transmitted light battery are simultaneously by same light source irradiation during work, it is the same to change size a little less than the light intensity that their receptions are caused by noise, direction is the same, behind the input differential circuit, the photocurrent variations that noise causes is by common mode inhibition, because what the scattered light battery was received is the light signal of suspended particle in liquid institute scattering, and the light signal of being decayed by colourity and suspended particle in the survey liquid that the transmitted light battery is received, the light of suspended particle scattering should equal its light of decaying in fluid to be measured, therefore they are cancelled each other in differential circuit, so just obtained the light signal that fluid to be measured colourity is decayed, by amplifying, obtained the chromatic value of fluid to be measured.The light signal received of light signal of being decayed with the fluid to be measured colourity that obtains and transmitted light battery subtracts each other again, just obtains the value of suspended particle institute attenuate light in the fluid to be measured, just the turbidity value of fluid to be measured.Having this looses.There is not the noise problem in the turbidimeter of saturating multi-pass feature, and general common have the differential operational circuit of certain amplifying power all applicable.
The present invention looses.Carrier chrominance signal when saturating multi-pass look turbidimeter has solved photoelectric measurement liquid look turbidity.The turbidity signal.Interfere with each other problem between the noise signal.Can accurately measure the chromatic value of fluid to be measured.Turbidity value.Highly sensitive.Favorable reproducibility.Loading onto the liquid in-out pipe on the sample groove just can on-line continuous work.Measurement range is big.
The present invention looses.Saturating multi-pass look turbidimeter applied range can be environmental protection.The size waterworks.All kinds of industrial and mining enterprises.R﹠D institution accurately provides the colourity that needs to survey liquid, turbidity data.
Description of drawings:
Fig. 1 structural representation
Fig. 2 outside drawing
1_ illuminator .2_ lens .3_ sample groove .4_ transmitted light battery .5_ scattered light battery .6_ differential circuit .7_ gauge outfit .8_ turbidimeter panel (a zeroing knob .b range knob .c power switch .d look turbid switch) .9_ shadow shield .10_ sample groove chamber .11_ fuselage.
The present invention is in order to method enforcement down
As shown in the figure. scattered light battery (5) is contained in the sample groove chamber (10). and transmitted light battery (4) is contained in back, sample groove chamber. when filling the liquid sample groove (3) of liquid with a light source (1) irradiation; produce opto-electronic conversion simultaneously on corresponding two photoelectric cells (4) (5); the electric current that is converted to is imported differential circuit (6) both-end. and external condition is the same during owing to two photoelectric cells (4) (5) work; the temperature that produces is floated; noise electric signal such as voltage fluctuation size is the same; to differential circuit (6) is that the input of noise common mode is suppressed; can not amplify. but photoelectric cell (4) accepts is the transmitted light that sees through sample groove (3) (turbid along with liquid; colourity changes and changes). and photoelectric cell (5) is accepted by the light of suspended particulates in the liquid sample (turbidity just) institute scattering; be not subjected to the interference of colourity. so the wide little difference of photoelectric cell (4) (5) reception; after the input of differential circuit (6) both-end; the electrical noise signal that their ectocine produces is by common mode inhibition; the photosignal that the interior liquid turbidity of sample groove (3) produces becomes common-mode signal equally and is suppressed. and the photocurrent variations that colourity causes makes the needle deflection of the gauge outfit (7) that connects differential circuit (6) output terminal; indicate the chromatic value of this liquid. during turbidimetry; as long as utilize look. the look that turbidimetry switch (d) produces the colourity photo-signal that obtains with photoelectric cell (4) again; the turbidity photo-signal is imported differential circuit (6) together. and the photo-signal of colourity generation is at this moment suppressed by differential circuit (6); remaining turbidity signal makes gauge outfit (7) needle deflection; indicate the turbidity value of liquid. during real work; photoelectric cell (5) can be as required; paired or the independent in groups any position that to accept sample groove (3) scattered light in the instrument that is contained in; after sample groove (3) is loaded onto liquid in-out sample pipe; the present invention just becomes and can on-line continuous measure liquid colourity; the instrument of turbidity. the present invention looses. and saturating multi-pass look turbidimeter has range selector; measurement range is big; highly sensitive, good reproducibility. can be used on environmental protection. water factory. each need measure the field of liquid colorimetry-turbidity breweries etc.
Implementation column.
Measure liquid turbidity. energized, preheating. rotate zeroing knob (a) and make gauge outfit (7) be designated as zero. in sample groove (3), add fluid to be measured then, putting into instrument closes the lid, (d) forwards the turbidimetry position to selector switch, can on gauge outfit (7), read the turbidity value of fluid to be measured. liquid colour measurement method is identical, only need forward switch (d) to the colour measurement position. domestic and international existing photo-electric look turbidimeter since extraneous factor disturb (voltage. temperature effect) drift is big, poor repeatability. can accurately not carry out colorimetry-turbidity and measure liquid. the present invention looses. and saturating multi-pass look turbidimeter has overcome this shortcoming, even under the very large situation of external interference, also can accurately reflect the turbidity and the chromatic value of fluid to be measured respectively.
Claims (1)
1, diffusing, saturating multi-pass look turbidimeter, a kind ofly utilize scattering, the transmission multi-pass compares and measures the instrument of liquid colorimetry-turbidity, it is by illuminator (1) lens (2) sample grooves (3) photoelectric cells (4) (5) differential circuits (6) gauge outfits (7) shadow shields (9) ... form, its principal character is scattered light and the transmitted light that photoelectric cell (4) (5) is accepted sample groove (3) respectively, compares measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94102702 CN1111752A (en) | 1994-03-15 | 1994-03-15 | Astigmatic and transmissible multiplex colour turbidimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94102702 CN1111752A (en) | 1994-03-15 | 1994-03-15 | Astigmatic and transmissible multiplex colour turbidimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1111752A true CN1111752A (en) | 1995-11-15 |
Family
ID=5030762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94102702 Pending CN1111752A (en) | 1994-03-15 | 1994-03-15 | Astigmatic and transmissible multiplex colour turbidimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111752A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128814A (en) * | 2010-12-09 | 2011-07-20 | 中国科学院安徽光学精密机械研究所 | Light path structure and method for detecting large-dynamic range liquid turbidity |
| CN104198444A (en) * | 2014-09-17 | 2014-12-10 | 道道全粮油股份有限公司 | Device and method for quickly measuring content of wax in oil product |
| CN105203505A (en) * | 2015-10-20 | 2015-12-30 | 深圳市清时捷科技有限公司 | Water quality online turbidity and chromaticity-integrated detector and method |
| CN105277518A (en) * | 2015-11-02 | 2016-01-27 | 深圳市智水小荷技术有限公司 | Water quality chromaticity measuring method and apparatus |
| CN106770051A (en) * | 2016-11-21 | 2017-05-31 | 北京京源水仪器仪表有限公司 | A kind of self power generation water turbidity test device |
| CN107907506A (en) * | 2017-11-08 | 2018-04-13 | 华东师范大学 | A kind of measuring device and method of wide-range and dynamic optimum resolution measurement silt content |
-
1994
- 1994-03-15 CN CN 94102702 patent/CN1111752A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128814A (en) * | 2010-12-09 | 2011-07-20 | 中国科学院安徽光学精密机械研究所 | Light path structure and method for detecting large-dynamic range liquid turbidity |
| CN102128814B (en) * | 2010-12-09 | 2012-09-05 | 中国科学院安徽光学精密机械研究所 | Light path structure and method for detecting large-dynamic range liquid turbidity |
| CN104198444A (en) * | 2014-09-17 | 2014-12-10 | 道道全粮油股份有限公司 | Device and method for quickly measuring content of wax in oil product |
| CN105203505A (en) * | 2015-10-20 | 2015-12-30 | 深圳市清时捷科技有限公司 | Water quality online turbidity and chromaticity-integrated detector and method |
| CN105277518A (en) * | 2015-11-02 | 2016-01-27 | 深圳市智水小荷技术有限公司 | Water quality chromaticity measuring method and apparatus |
| CN106770051A (en) * | 2016-11-21 | 2017-05-31 | 北京京源水仪器仪表有限公司 | A kind of self power generation water turbidity test device |
| CN107907506A (en) * | 2017-11-08 | 2018-04-13 | 华东师范大学 | A kind of measuring device and method of wide-range and dynamic optimum resolution measurement silt content |
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